class_docstr: Test that rotation merging works in all interfaces.
docstr: Test QNode and gradient in tensorflow interface.
docstr_tok: ["Test","QNode","and","gradient","in","tensorflow","interface","."]
code: def test_merge_rotations_tf(self):
      """Test QNode and gradient in tensorflow interface."""
      import tensorflow as tf
  
      original_qnode = qml.QNode(qfunc_all_ops, dev)
      transformed_qnode = qml.QNode(transformed_qfunc_all_ops, dev)
  
      original_input = tf.Variable([0.1, 0.2, 0.3, 0.4])
      transformed_input = tf.Variable([0.1, 0.2, 0.3, 0.4])
  
      original_result = original_qnode(original_input)
      transformed_result = transformed_qnode(transformed_input)
  
      # Check that the numerical output is the same
      assert qml.math.allclose(original_result, transformed_result)
  
      # Check that the gradient is the same
      with tf.GradientTape() as tape:
          loss = original_qnode(original_input)
      original_grad = tape.gradient(loss, original_input)
  
      with tf.GradientTape() as tape:
          loss = transformed_qnode(transformed_input)
      transformed_grad = tape.gradient(loss, transformed_input)
  
      assert qml.math.allclose(original_grad, transformed_grad)
  
      # Check operation list
      ops = transformed_qnode.qtape.operations
      compare_operation_lists(
          ops, expected_op_list, expected_wires_list
      )
  
imports: import pytest
  from utils import compare_operation_lists
  import pennylane
  from pennylane import numpy
  from pennylane.wires import Wires
  from pennylane.transforms.optimization import merge_rotations
label_desc: Use image node_id 3 for calling the TestMergeRotationsInterfaces obj's underlying member method code with example usage: obj.test_merge_rotations_tf() without return types